cxRepManager.h

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

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modification, are permitted provided that the following conditions are met:

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   this list of conditions and the following disclaimer.

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   and/or other materials provided with the distribution.

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   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
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#ifndef CXREPMANAGER_H_
#define CXREPMANAGER_H_

#include "org_custusx_core_view_Export.h"

#include <QObject>
#include <map>
#include <vector>
#include "cxForwardDeclarations.h"

namespace cx
{
typedef boost::shared_ptr<class Rep> RepPtr;
}

namespace cx
{

typedef std::map<QString, RepPtr> RepMap;
typedef std::map<QString, VolumetricBaseRepPtr> VolumetricRepMap;

class Reporter;

class org_custusx_core_view_EXPORT RepManager: public QObject
{
Q_OBJECT

public:
        static RepManager* getInstance(); 
        static void destroyInstance(); 

        template<class REP>
        boost::shared_ptr<REP> getCachedRep(QString uid = "")
        {
                // look for existing value:
                for (RepMultiMap::iterator iter = mRepCache.begin(); iter != mRepCache.end(); ++iter)
                {
                        if (iter->first != uid)
                                continue;
                        int uc = iter->second.use_count();
                        if (uc >1)
                        {
//                              std::cout << "cached rep in use: " << uid.toStdString() << ", use count: " << uc << std::endl;
                                continue;
                        }

                        boost::shared_ptr<REP> retval = boost::dynamic_pointer_cast<REP>(iter->second);
                        if (retval)
                        {
//                              std::cout << "reusing cached rep: " << uid.toStdString() << ", use count: " << uc << std::endl;
                                return retval;
                        }
                }

                // create new value, store and return:
                boost::shared_ptr<REP> retval = REP::New(uid);
                mRepCache.insert(std::make_pair(uid, retval));

                return retval;
        }

protected:
        static RepManager* mTheInstance; 

        typedef std::multimap<QString, RepPtr> RepMultiMap;
        RepMultiMap mRepCache;

private:
        RepManager(); 
        virtual ~RepManager(); 
        RepManager(RepManager const&); 
        RepManager& operator=(RepManager const&); 
};


} //namespace cx

#endif /* CXREPMANAGER_H_ */